Catalyst Pre-Workout, Immediate Energy, Focus and Stamina for Lean Muscle Growth and Powerful Strength by Strength.com - 30 Servings of Sour Apple

This is the second time I purchased this product. I absolutely LOVE how it has helped my running. However when I opened this bag, the powder is not just white like it was with my first bag. It has these sand colored, brown particles in it? I'm not sure why this is and I hope it doesn't affect the taste or my performance.